diff --git a/app/pdb/plug-in-compat-cmds.c b/app/pdb/plug-in-compat-cmds.c
index 53fc3b255e..b8a7585c5b 100644
--- a/app/pdb/plug-in-compat-cmds.c
+++ b/app/pdb/plug-in-compat-cmds.c
@@ -9565,7 +9565,7 @@ register_plug_in_compat_procs (GimpPDB *pdb)
                                g_param_spec_double ("wavelength",
                                                     "wavelength",
                                                     "The Wavelength of the Waves",
-                                                    0.1, 50, 0.1,
+                                                    0.1, 100, 0.1,
                                                     GIMP_PARAM_READWRITE));
   gimp_procedure_add_argument (procedure,
                                g_param_spec_boolean ("type",
diff --git a/pdb/groups/plug_in_compat.pdb b/pdb/groups/plug_in_compat.pdb
index aec169c6cf..5596d41ee2 100644
--- a/pdb/groups/plug_in_compat.pdb
+++ b/pdb/groups/plug_in_compat.pdb
@@ -4942,7 +4942,7 @@ HELP
 	  desc => 'The Amplitude of the Waves' },
 	{ name => 'phase', type => '-360 <= float <= 360',
 	  desc => 'The Phase of the Waves' },
-	{ name => 'wavelength', type => '0.1 <= float <= 50',
+	{ name => 'wavelength', type => '0.1 <= float <= 100',
 	  desc => 'The Wavelength of the Waves' },
 	{ name => 'type', type => 'boolean',
 	  desc => 'Type of waves: { 0 = smeared, 1 = black }' },